What is the installation procedure of plastic coated bs bearings

The preparation stage of bearing installation is a key link in the entire assembly process. Ensuring the rigor and accuracy of this stage will directly affect the service life and performance of the bearing. First of all, it is necessary to confirm the matching of the selected bearing model, size, tolerance grade and installation position. In addition, the state of the plastic coating needs to be fully checked to ensure that there are no cracks, bubbles, peeling or any signs of contamination on its surface. All relevant installation tools should be prepared in advance, including special bearing installation sleeves, hydraulic tools, torque wrenches, induction heating devices, lubrication equipment and dust covers, etc., and these tools should be thoroughly cleaned and checked to ensure dust and oil free.

During the installation process, operators should wear dust-free work clothes, gloves and anti-static wristbands to minimize the interference of external particles and static electricity on the plastic coating. The installation environment should maintain constant temperature and humidity and be kept clean to avoid the influence of dust and water vapor on the plastic coating.

When heating the bearing assembly, it is recommended to use induction heating or constant temperature oil bath to evenly heat the inner ring to the specified temperature. Normally, the heating temperature should be controlled between 80℃ and 100℃. Do not use open flames or direct high-temperature contact heating. The heating process needs to be monitored throughout to prevent local overheating from softening the coating or imbalance of material stress. The heated bearing should be quickly, vertically and smoothly inserted into the shaft neck to avoid jamming or eccentricity caused by misalignment during the cooling process.

If cold installation is adopted, it is necessary to ensure that the fit clearance between the shaft and the inner ring of the bearing is strictly controlled within the recommended range. Use the bearing press-fitting equipment to apply uniform pressure to the inner ring and gradually press the bearing into the predetermined position. During this process, direct pressure should be avoided on the outer ring or coating surface to avoid indentation or structural deformation on the surface of the plastic layer. For structures fixed with a tightening sleeve or a retaining ring, the corresponding torque must be set according to the bearing model, and the fixed parts must be gradually locked with special tools to ensure that the bearing will not slip or move during thermal expansion and contraction.

After the bearing is pressed, a preliminary rotation test is required to observe whether there is obvious jamming, abnormal noise or resistance change. If any abnormality is found, the operation should be stopped immediately, the installation accuracy and position deviation should be rechecked, and the bearing should be disassembled and replaced if necessary. After the test is completed, the coating surface should be carefully inspected to confirm that no scratches, extrusion marks or coating peeling occurred during the installation process. In some application scenarios, the microstructure of the coating can be detected using a laser confocal microscope or a surface profiler to ensure that its finish and protection performance meet the expected standards.

Subsequently, the lubricant injection or grease filling process is carried out. Although the plastic-coated BS bearing has certain self-lubricating properties, it is still necessary to cooperate with a suitable lubrication solution in high-load or high-speed applications. The selection of lubricants should avoid the use of additives that may cause the risk of swelling, softening or decomposition of the plastic coating. Synthetic esters, fluorine or silicone-based greases are recommended. During the grease injection process, the lubricant should be prevented from leaking to the outer area of ​​the plastic surface to prevent dust from adhering to form foreign matter contamination. After lubrication is completed, a seal ring or end cover needs to be installed to improve the overall dust and water resistance.

Finally, the equipment should be tested for no-load operation after the bearing is assembled. Run at low speed and no load for 10 to 30 minutes, and monitor the temperature rise, noise and vibration of the bearing in real time to ensure stable operation. Through this series of strict installation and testing processes, the stable performance and service life of the bearing can be effectively guaranteed, laying a solid foundation for subsequent operation.